[Linux images] PS1 with current working dir

This is a feature request :)

Would it be reasonable to build the linux images such that the bash PS1 env var includes the (absolute) current working dir?

Something basic like:
```
PS1='\u@\h:\w\$ '
```
Would help wonders when interactively running the image using bash.

Thanks!!

Locate the Linux image build configuration and the bash startup entry point, then inspect how the interactive prompt is currently initialized. Done means an interactive bash session in the Linux images displays the absolute current working directory in PS1.

Written by the indexing model from the issue text.